I wouldn't think so. I mean, if it went over 80F I'd run to the store and get another bubbler to throw in there to keep oxygen up, but that's about it. Putting a fan over the top of the tank isn't a bad idea either.

Hey what do you do if you have goldfish and your house gets really hot in the summer? Do you need to get a chiller?

Actually just opening the top of your aquarium will really cool the thing off. I have a ceiling fan in my room and run that with the lids open if it gets above 80F. The water cools back to about 77F. I don't think it's worth it to invest in aquarium chillers (they are upwards of $500--I've looked because I like native fish and they don't like warm water) or aquarium fans. You can find desk fans for dorms that clip on to surfaces. Just point one of those over your tank if you don't have a ceiling fan.

Actually just opening the top of your aquarium will really cool the thing off. I have a ceiling fan in my room and run that with the lids open if it gets above 80F. The water cools back to about 77F. I don't think it's worth it to invest in aquarium chillers (they are upwards of $500--I've looked because I like native fish and they don't like warm water) or aquarium fans. You can find desk fans for dorms that clip on to surfaces. Just point one of those over your tank if you don't have a ceiling fan.

I dont have a ceiling fan, but chances are I wont be getting goldfish in the place where I am living now. I know chillers are expenseive, so I'm glad I can use fans instead :)

Well, I was doing some shots of Petra today for Izzy (koimaiden), and I thought to myself, "heck, why not throw a few more in for photos?" So I got these, and I like the idea, so I may do some neater/clearer shots another time.

Well, from the above.. Petra is a ranchu, Piper is a fantail, Paris is a ryukin, and Penelope is an oranda.. I also have another ryukin, another oranda, and another ranchu that I didn't photograph today.